wasm-cpp

Please see our main repository for the application of the demo below.

How to use

cd demo && python3 -m http.server 8080

Demo List

Name	Description	Runtime	Param	USAGE
addTwo	add two number	wasmtime	(INT32 INT32) -> (INT32)
gcd	greatest common divisor	wasmtime	(INT32 INT32) -> (INT32)
string	return string	WasmEdge	(STRING) -> (STRING)
Feishu Bot	call Feishu api and send message	WasmEdge	(STRING) -> (STRTING)
calcutor	an calcutor	WasmEdge	(STRING) -> (STRTING)

The SQL

addTwo

CREATE FUNCTION gcd_main(x INT32, y INT32) RETURN INT32 FROM WAT://KG1vZHVsZQogIChmdW5jICRnY2QgKHBhcmFtIGkzMiBpMzIpIChyZXN1bHQgaTMyKQogICAgKGxvY2FsIGkzMikKICAgIGJsb2NrICA7OyBsYWJlbCA9IEAxCiAgICAgIGJsb2NrICA7OyBsYWJlbCA9IEAyCiAgICAgICAgbG9jYWwuZ2V0IDAKICAgICAgICBicl9pZiAwICg7QDI7KQogICAgICAgIGxvY2FsLmdldCAxCiAgICAgICAgbG9jYWwuc2V0IDIKICAgICAgICBiciAxICg7QDE7KQogICAgICBlbmQKICAgICAgbG9vcCAgOzsgbGFiZWwgPSBAMgogICAgICAgIGxvY2FsLmdldCAxCiAgICAgICAgbG9jYWwuZ2V0IDAKICAgICAgICBsb2NhbC50ZWUgMgogICAgICAgIGkzMi5yZW1fdQogICAgICAgIGxvY2FsLnNldCAwCiAgICAgICAgbG9jYWwuZ2V0IDIKICAgICAgICBsb2NhbC5zZXQgMQogICAgICAgIGxvY2FsLmdldCAwCiAgICAgICAgYnJfaWYgMCAoO0AyOykKICAgICAgZW5kCiAgICBlbmQKICAgIGxvY2FsLmdldCAyCiAgKQogIChleHBvcnQgIm1haW4iIChmdW5jICRnY2QpKSA7OyBleHBvcnQgd2l0aCBtYWluCik=;
RETURN UDF("gcd",[12,27]);

gcd

string

cd demo/string/say && rustwasmc build
cd demo && python3 -m http.server 8080

CREATE FUNCTION thestring_say(x STRING) RETURN STRING FROM PATH://http://0.0.0.0:8080/string/say/pkg/rust_bindgen_funcs_lib_bg.wasm;
RETURN UDF("thestring",["triplez"])

Feishu Bot

How to develop

Include runtime

• wasmtime
• WasmEdge

wasmtime

Official guide

Get wasmtime kit

Ref: https://github.com/bytecodealliance/wasmtime-cpp

wget https://github.com/bytecodealliance/wasmtime/releases/download/v0.32.0/wasmtime-v0.32.0-x86_64-linux-c-api.tar.xz
mkdir wasmtime-c-api&& tar -xvf wasmtime-v0.32.0-x86_64-linux-c-api.tar.xz --strip-components=1  -C wasmtime-c-api
wget https://raw.githubusercontent.com/bytecodealliance/wasmtime-cpp/main/include/wasmtime.hh -O wasmtime-c-api/include/wasmtime.hh
rm wasmtime-v0.32.0-x86_64-linux-c-api.tar.xz

Compile

mkdir build && cd build && cmake ../ 
make TestWasmtimeMain

WasmEdge

Official guide

mkdir build && cd build && cmake ../ 
make TestWasmEdgeMain